ASSIGNMENT #9

 

DUE ON NOVEMBER 10, 2005

 

HAND-IN

CHAPTER #25:

 

QUESTIONS:

5   (a) In Figure 25-22a, are capacitors 1 and 3 in series? (b) In the same figure, are capacitors 1 and 2 in parallel? (c) Rank the equivalent capacitances of the four circuits shown in Figure 25-22, greatest first.

 

PROBLEMS:

64   In Figure 25-54, V = 12 V, C1 = C5 = C6 = 6.0 , and C2 = C3 = C4 = 4.0 . What are (a) the net charge stored on the capacitors and (b) the charge on capacitor 4?

 

65   In Figure 25-55, the battery potential difference V is 10.0 V and each of the seven capacitors has capacitance 10.0 . What is the charge on (a) capacitor 1 and (b) capacitor 2?

 

 

ONLINE

CHAPTER #25:

 

QUESTIONS:

 

 

PROBLEMS:

•••23   Figure 25-39 shows a 12.0 V battery and four uncharged capacitors of capacitances C1 = 1.00 , C2 = 2.00 , C3 = 3.00 , and C4 = 4.00 . If only switch S1 is closed, what is the charge on (a) capacitor 1, (b) capacitor 2, (c) capacitor 3, and (d) capacitor 4? If both switches are closed, what is the charge on (e) capacitor 1, (f) capacitor 2, (g) capacitor 3, and (h) capacitor 4?

 

••28   In Figure 25-28, a potential difference V = 100 V is applied across a capacitor arrangement with capacitances C1 = 10.0 , C2 = 5.00 , and C3 = 15.0 . What are (a) charge q3, (b) potential difference V3, and (c) stored energy U3 for capacitor 3, (d) q1, (e) V1, and (f) U1 for capacitor 1, and (g) q2, (h) V2, and (i) U2 for capacitor 2?

 

CHAPTER #27:

 

QUESTIONS:

 

 

PROBLEMS:

••52   Figure 27-53 shows the circuit of a flashing lamp, like those attached to barrels at highway construction sites. The fluorescent lamp L (of negligible capacitance) is connected in parallel across the capacitor C of an RC circuit. There is a current through the lamp only when the potential difference across it reaches the breakdown voltage VL; then the capacitor discharges completely through the lamp and the lamp flashes briefly. For a lamp with breakdown voltage VL = 72.0 V, wired to a 95.0 V ideal battery and a 0.150  capacitor, what resistance R is needed for two flashes per second?

 

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